You get EMB-120 ER as a default as you need it for your P2 check ride, so if you have yet to taken the the EMB-120ER check ride, you have to do it in order for you to fly the Q400. the -100 comes with the default. That is because some time ago, it used to be just DHC-8, but Andrew changed that to -100 and added Q400s. That is why you need to go take the CR again.

Not to sound too sarcastic or anything negative, but if you were to take close look at the primary and secondary rating section in the manual, you will find your answer ***you will receive the secondary once you complete that specific primary rating aircraft

Okay, so let me see if I understand. EMB-120 is a check ride aircraft, however if you have flown and passed the P2 exam, does that also mean you have now passed the Checkride in the EMB-120? Now with that question the DHC-8-Q400 is on my list of authorized airframes however there is no routes in the Alaska Airlines or any of them for that matter. Seems like the Alaska Routes that 51 of the airframes fly in the real world aren't on our list.

Yes. All pilots have the E120 rating regardless of what program they join at the beginning. This allows anyone to take the following but academy courses. There are secondary ratings like the dash 8 that require a check ride the the E120 program to obtain them. The E120 program is sort of different in this way. Perhaps im just rehashing what Soonho already said.

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